Unlike many other mainframe software companies, Corsac Technologies is a trusted team that helps you modernize smartly. This approach means they don’t change everything from the ground up; they provide an in-depth evaluation first. Based on the analysis, the Corsac experts prioritize the business-critical components and try to preserve what works well. They deliver modernization incrementally, ensuring continuity and integrity of your core processes. Their other advantages include security, smooth performance, and advanced delivery practices powered by DevOps/DevSecOps and hybrid cloud integration.

IBM is a reliable vendor that provides a wide range of modernization services: rehosting, refactoring, API enablement, hybrid integration, etc. Backed by IBM Consulting, they help build a comprehensive modernization strategy and define the best tools and methods tailored specifically to your project. They combine their deep mainframe expertise and AI to eliminate technical debt and architectural complexity, and ensure robust security and smooth scalability. They also support the continuous development of new features and updates.

If you’re looking for a client-focused partner that will treat the modernization process with deep respect for your timelines, budget, and business goals, Accenture will be a great choice. They help enterprises get the maximum out of cloud adoption, enhancing app architecture, infrastructure, and network. They also ensure seamless data flow and provide advanced AI analytics. Thanks to modern DevOps practices, portfolio analysis, and APIs, the Accenture experts minimize risks, accelerate processes, and reduce system weaknesses.

Kyndryl offers end-to-end mainframe product engineering services, starting from rehosting to complete off-mainframe moves. Their key priorities are risk minimising, consistent outcomes, security, and alignment with your business goals. The Kyndryl experts create proven hybrid strategies that combine old and new technologies with AIOps and generative AI, accelerating time-to-value. They are Microsoft and Google Cloud partners, making the modernization process even more reliable and error-free.

While preserving a strong focus on your business logic and workflow integrity, Luxoft helps conduct modernization with strong test coverage and up-to-date tools. This company is a top choice among organizations that need to migrate complex, business-critical systems. Their experts are capable of handling mainframe modernization projects of any complexity, providing in-depth initial analysis and setting realistic expectations. Their solutions are license-free and come with no vendor lock-in. Thanks to CI/CD pipelines and automation, the Luxoft professionals deliver a smooth process without downtime.

Mainframe modernization conducted by CGI is about maximizing your IT investment and achieving measurable outcomes. They provide a comprehensive evaluation of your legacy app to define the full scope of required changes and plan the best possible modernization path based on your strategic goals (migration, replatforming, consolidation, replacement, etc.). You’ll get a holistic view and valuable insights to optimize costs and eliminate risks. Moreover, they ensure secure migration via their Global Competency Center and M8 automated tools.

HCLTech is one of the VMS companies providing a hybrid approach to modernization. Their proven strategy is a mix of mainframe and cloud opportunities optimized to get the best of both environments. Their key goal is to reduce operational costs and complexity, while maximizing efficiency and maintainability. Based on their “business capability first” approach, enterprises can prioritize modernization objectives and implement changes incrementally, avoiding workflow disruption, risks, and resource misalignment.

This company is trusted by more than 12,500 companies of different sizes and industries worldwide. By leveraging AI as the main modernization driver, they accelerate innovation and business growth. The Rocket Software team was recognized as a Challenger in the 2025 Gartner Magic Quadrant, which is strong evidence of their reliability and cutting-edge approach. They deliver hybrid cloud solutions, security & compliance solutions, optimizing skills & efficiency solutions, data solutions, etc.

Backed by 30+ years of experience, they offer end-to-end mainframe modernization. Thanks to proprietary tool NxTran, they help tackle the most common mainframe challenges, such as high maintenance costs, integration issues, inability to support business agility, etc. Among the outcomes achieved via NxTran are accelerated time-to-market, enhanced migration accuracy, minimized human-caused errors, and reduced operational workloads. The Kumaran team has already performed 2000+ migrations for Fortune 500 companies from various industries.

If you’re looking for a low-risk modernization path and want to maximize business value through better predictability, security, and compliance, Wipro will be a great choice. The industries of their focus are banking, media & info services, energy, manufacturing, healthcare, pharma, etc. By applying automated analysis, proven frameworks, and advanced CI/CD practices, the Wipro experts help accelerate the modernization process, save your budget, and ensure long-lasting outcomes. A well-structured, transparent workflow is one of their core competitive advantages.

With 300+ mainframe modernization projects delivered, this team ensures seamless automated migration with proven results. Astadia's FastTrack provides a toolset for cost-efficient modernization with rapid execution and minimized risks. Automation, advanced testing, generative AI, and scalability are at the core of their modernization efforts, helping enterprises avoid operational difficulties and grow without performance limitations. Astadia’s key mainframe modernization approach is replatforming, which is proven to be the fastest way to conduct your digital shift.